IIGDT Newsletter January 2017
 
 
Definition of Quality to the following disciplines?

Design: Quality of all the specification requirements to confidently and optimally represent the designer’s true functional intent.

  • Designers expect all features conform to their specification requirements within the allowable tolerances they’ve specified on the drawings and supporting specifications.

Manufacturing: Quality of the manufactured product to confidently ensure optimally conforming product to all the specification requirements.

  • Manufacturing should be focused on how they can confidently ensure all features on the parts meet the specification requirements utilizing all the quality / statistical tools they have at their disposal. Understanding the true magnitude of manufacturing error (manufacturing uncertainty as well as measurement uncertainty) and guard-banding the specification requirements accordingly will result in a high degree of confidence that parts produced truly conform to specification requirement.

Quality: Quality of the inspection data to confidently ensure product conformance to all the specification requirements.

  • Quality should be focused on how they can confidently ensure all of the specification requirements are met with the quality/statistical tools they have at their disposal. Understanding the true magnitude of measurement error (measurement uncertainty) and guard-banding the specification requirements accordingly will result in a high degree of confidence to accept or reject product. Using fundamental / advanced statistical tools and ensuring positive correlation between measured parameters over a reasonable period of time will result in the confidence required to potentially reduce inspection levels.
 

IIGDT Seminar Series : February - April 2017
Minnesota Seminar Locations
Minneapolis, MN Intro to Mechanical Drawings & GD&T
Feb 6-10, 2017 GD&T—Intermediate Principles
  GD&T—Advanced Applications
   
Minneapolis, MN GD&T—Tolerance Optimization
February 20-21, 2017  
   
Portland, OR Intro to Mechanical Drawings & GD&T
Mar 6-10, 2017 GD&T—Intermediate Principles
  GD&T—Advanced Applications
   
Santa Clara, CA Intro to Mechanical Drawings & GD&T
April 3-7, 2017 GD&T—Intermediate Principles
  Introduction to Dimensional Metrology
   

If you would like to host a Seminar Series within your community or your company, please contact Dr. Greg Hetland for more information.

For our full schedule, visit our GD&T Seminar Schedule Page!


GD&T Chart per ASME Y14.5M-2009

IIGDT has released a new GD&T Symbol Chart supporting the ASME Y14.5-2009 standard. Since the original chart was issued based on the 1994 standard several changes have been implemented. In addition, the IIGDT chart provides clear and descriptive explanations for all symbols.

New for this year is the expanded use of 3D profile shown being applied to CAD models to demonstrate the effective use and interpretation of Profile call-outs.

Developed by Dr. Greg Hetland, this guide has been widely used in industry and can be found in many companies across the world.

Size: 24" (610 mm) x 36" (914 mm)

A Poster Paints a Thousand Words... Read about the History of the Chart here.

Visit the GD&T ASME Y14.5-2009 Chart on iigdt.com

GD&T Chart per ASME Y14.5M-2009

 
Dr. Greg Hetland

Phone: (651) 275-8952
Fax: (612) 395-5405

greg-hetland@iigdt.com
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